C-Flex by Cortel vs OnSIP

Founded in Somerset, New Jersey, C-Flex revolutionizes business communications with their innovative phone systems tailored to different business models. Established by cloud technology provider Cortel in 1979, C-Flex integrates hardware and software expertise, ensuring reliable solutions for businesses worldwide. Trusted by industry giants like American Express and Air France, they deliver seamless connectivity through VoIP services, availability checks, and web client accessibility. C-Flex offers versatile pricing plans, accommodating businesses of all sizes, from small teams to large corporations. Their plans range from a free option for ten users to advanced packages with premium features, such as CRM integration and Microsoft Teams integration. Key features include call coaching tools for improved client relations, a mobile application for on-the-go communication, and a 30-day free trial for risk-free exploration. Customer reviews praise C-Flex's responsive customer service and user-friendly interface despite some initial setup challenges. With comprehensive offerings, C-Flex by Cortel stands as a reliable choice for businesses seeking efficient communication solutions.

OnSIP is a business VoIP solution provider founded in 2004 and based in Manhattan, New York. They serve over 100,000 SMBs across various industries. Their services include unified communication tools like softphone apps, remote work tools, website chat, and video conferencing. You can build your own hosted VoIP plan or bundle all features to save costs. OnSIP's cloud-hosted PBX offers call management and secure communication services, including end-to-end encryption, SDES-SRTP encryption, customizable anti-spam filters, geographically distributed cloud, industry-leading reliability, and call routing and recording features. They have an excellent reputation and received multiple awards, including the Excellence in Customer Service Award from Business Intelligence Group for 2019-2023 and recognition as a FrontRunner in 2024 by Software Advice. They have an A+ rating with no complaints from BBB and receive positive feedback from users.